Practical SQL

18IDENTIFYING AND TELLING THE STORY BEHIND YOUR DATA

Although learning SQL can be fun in and of itself, it serves a greater purpose: it helps uncover the hidden stories in your data. As you learned in this book, SQL gives you the tools to find interesting trends, insights, or anomalies in your data and then make smart decisions based on what you’ve learned. But how do you identify these trends just from a collection of rows and columns? And how can you glean meaningful insights from these trends after identifying them?

Identifying trends in your data set and creating a narrative of your findings sometimes requires considerable experimentation ...